Improved belt-coupling



UNDE-RWO'OD.

BELT COUPLING No. 36,814. Patented 001;. 28, 1862.

UNITED STATES.

H ENR T UNDI'GRWOOD,

PATENT. OFFICE.

OF NE\V YORK, Y.

IMPROVED BELT-COUPLlNG.

S ecification forming part of Letters Patent No. 36.814, dated October 28, 1862.

To 6025 2071 0772 it may concern:

Be it known that I, HENRY U NnnRwooD,

of the city, county, and State of New York,

companying drawings, making apart of this specification, in which',

Figure'l is a longitudinal section of the lapped ends of a belt connected together by my invention. Fig. 2 is a face view of the same; Fig. 3, a .detached view of a pair of rivets which constitute my invention.

Similar letters of reference indicate corresponding parts'in the several figures;

This invention relates to anew and useful improvement in the rivet coupling or joint hitherto employed for connecting together the ends of machine-belting.

The invention consists in having the rivets connected together in pairs by a strap, the rivets and strap being swaged in proper form from a single piece of copper, whereby several advantages areobtaiued over the ordinary rivets, as hereinafter fully set forth;

To enable those skilled in the art to fully understand and construct my invention, I will proceed to describe it with reference to the drawings.

A A represent the lapped ends of a belt, the ends being chamfered or skived, and then connected and lapped in the usual way.

ll represents the rivets, which are of the usual length, and connected in pairs by astrap, O, the width of which may be about equal to the diameter of the heads of ordinary rivtes. The ends of the strap, however, do notproject but a trille beyond the ends of the rivets, as will be seen by referring to Fig. 1.

Each pair of rivets and thcirstraps are swaged'out'of a single piece 6f copper. The straps may be of any suitable length. They need not exceed greatly the combined diamel of the straps extending or projecting slightly over the end of each lap, as shown in Figs.

1 and 2. 3y this means the extremeend of each lap oi. the belt is retained snugly in proper position, and prevented from being curled up by its passage over the wheel or pulley on which it runs. 7 On the free or disengaged ends of the riv ets, at the opposite side of the belt, there'arc fitted washers E, on which the ends of the rivets are headed. (See more particularly in Fig. 1.) I

The'straps'O are far superior to the ordinary rivet-heads for keeping the ends of the laps snugly to the belt. Straps, however, have been previously used, and may be seen in a belt coupling or joint patented by me February 9, 1858. In this invention, however.

. the straps were made detached and perforated near their ends for the rivets to pass through. This involved considerable trouble and time in applying the rivets to the belt, and the straps could not be made as short as desirable, as the rivet-holeswere necessarily made at some distance from the ends of the strap, in order to prevent the rivets tearingout from it.

The long straps are liable to be bent or curved in passing over pulleys or wheels, especially if the latter be not large in diameter, and the ends of the straps thereby become loose and curl up or outward from the belt, leaving the ends of the laps unprotected, and

which are consequently also liable to curl up which my improvement may be applied to the belt. I

'I would remark that my invention is applicable for butted joints as well as .for lapjoints.

Having thus described my inventiomwhat I claim as new, and desire to secure by Letters,

Patent, is-

The connecting of rivets B permanently in pairs by means of straps O, swaged with the.

rivets from or out of a single piece of copper, to form an improved belt coupling or join-t.

HENRY unonawooo.

Witnesses:

R. GAWLEY, TIMOTHY SHINE. 

